129900340 has 48 divisors (see below), whose sum is σ = 294940800. Its totient is φ = 47889792.

The previous prime is 129900319. The next prime is 129900371. The reversal of 129900340 is 43009921.

It is a happy number.

It is a super-3 number, since 3×129900340³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 129900299 and 129900308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9441 + ... + 18679.

It is an arithmetic number, because the mean of its divisors is an integer number (6144600).

Almost surely, 2^129900340 is an apocalyptic number.

129900340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129900340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147470400).

129900340 is an abundant number, since it is smaller than the sum of its proper divisors (165040460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129900340 is a wasteful number, since it uses less digits than its factorization.

129900340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9304 (or 9302 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 129900340 is about 11397.3830329598. The cubic root of 129900340 is about 506.4502182187.

The spelling of 129900340 in words is "one hundred twenty-nine million, nine hundred thousand, three hundred forty".